A vintage Altec driver from the 1950's. While it has a very strong sense of energy, it is also uniquely easy to hear. If you have an Altec system from Yonematsu's early days, please take this opportunity! You can see a feeling of use such as exterior, paint peeling, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.11.14 Maintained (the phosphor bronze plate on the outer drawer part was broken from the root → additional lead wires were soldered and connected. Distortion was confirmed in the sound output, so repair, stop the coil noise, and adjust centering)
Accessories: none
Main specifications: frequency characteristics 500 Hz to 12,000 Hz impedance 24 ohms sensitivity 115.2 dB allowable input 40 W recommended network N-500-C recommended crossover 500 Hz recommended horn H150/H804/1005B W165 D142 mm weight 9 kg